1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2303b4e30848e57e2b9625dbdee66b31e27c4799956042a7ffc4b2ff4bab9c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1078da4c-259a-47ae-8d03-4ea5034396d9.json and https://artists.proofprofile.net/proofs/artist/1078da4c-259a-47ae-8d03-4ea5034396d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a4edd8b33ca6883fa49aacf05734a1d823a57dad2447f4a83632e20d43ebf6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS180801724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6827201f2b88ccdd84c0c67009c8c9b17a984062207f8e7dfd1a28ffe7c60595. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS180801726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9988f67a61cb2573171a213d4a3fa0058604071663296150e63cf20b59635efb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS180801729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bab11f2f605e156b1cb0a670128a5557cd0ab43834bd7379dd3bdbdb5002b66. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX281728118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad5b18d7d050fca3c8a7487fd6113b56e099a0928211dc2fddf9499f291e3cd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX281728121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b7320da912ca8537634b78ee626b18295a8c6801c49bc7953a772ac0b19fd0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX281728299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801ff03ec1c3634ff9893df59b0eccd95bdd1e411049ff64d79599c283b21a27. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX281728300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78ccab764a8bd7e145f97d852b5253521315ea5c616720ff613d2feed97f61f. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX281728303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61851a39e36919718a23a280601bef4002c5793773a26c2cfbca2b03b1887533. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX281728304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264ae6d28720aeb21cddca6c4fc3fb63388ea3ed47a88565bd3152687089ad2c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX281728305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fc9013ba90e40642db97355d70a14ad5b4a41d77e3e66aaea24c538bde8be7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IND712005721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad296b24eddc81061a379fe36507b15a495a9e50a793dc1de5c20d860737f22a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IND712005722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd885e5be1888e4552fc13cf4f3cb70723cd49930edbd1d1ec062ea066d6b798b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IND712005724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97ecd995c07f0a6f9a02e50a555d7d11bd25cb934b55998215a72f155436596. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IND712005728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc9c4745223d3dbe41b27e86366101125f8b945d4654302c40374cfe57d24dc. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV350000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8842817e96f576332d86ebccc7a7a7acb06b8051d336ffc12a9b3499eaa977ff. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:38:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV350000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92461d2a235ae7d580123be17f2f9677a1ffa9d7d9bc047bcf59250eea579def. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV350000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde917b0edf548502b8d43731e57541b3c0b80e93c9cd88aa7a23644c0b908cfa. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV350000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f5bceda141e5be4ec3a4a0ffafb6053fcdb65f49ae8bb42e75c6aae2d9f518. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV350000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac8b235fd14dd9fdbaee839f56624c36051503f98dfab97a3dfa69d48888405. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV350000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd482e2d8ea9d40abfb036f69d2bde39594f3d5d2bd72a98ccb447815a72768a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV350100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949ec899d2d3b4e18afd987220c7969afb4da01f98b266920f11bfe6d7666a6c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV350100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278c3735095505aad6a30460fb3a67104fdbe524fdf2832cfae5e6f574fb38ef. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV350100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa99c93e057a4cabf58ad97fc83f6088ea1203f728d7cbafc1eb8fe3e222dc8d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV350100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a5892ce64387dc2fb5818b2146eca60bbb4c2455a989fb3a3494032cf37659. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV350100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d01a1b96e90569ea90846463a8ce163edf8f4a82d112e838ba4a3b31e027c5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV350100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c73707ac876181e58a97ef08aa0054c92fa51def9cc42cb129ab34f60f8a74. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV350600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a13b762807ad69f1aca128d5ea3a0f952ac1bbee3acbc5adfe53195abb5b22. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:52:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INV350600012.